ugen.c revision 1.87
1 /* $NetBSD: ugen.c,v 1.87 2006/10/12 17:50:07 xtraeme Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Copyright (c) 2006 BBN Technologies Corp. All rights reserved. 12 * Effort sponsored in part by the Defense Advanced Research Projects 13 * Agency (DARPA) and the Department of the Interior National Business 14 * Center under agreement number NBCHC050166. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the NetBSD 27 * Foundation, Inc. and its contributors. 28 * 4. Neither the name of The NetBSD Foundation nor the names of its 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 33 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 34 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 35 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 36 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 39 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 40 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGE. 43 */ 44 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.87 2006/10/12 17:50:07 xtraeme Exp $"); 48 49 #include "opt_ugen_bulk_ra_wb.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/malloc.h> 55 #if defined(__NetBSD__) || defined(__OpenBSD__) 56 #include <sys/device.h> 57 #include <sys/ioctl.h> 58 #elif defined(__FreeBSD__) 59 #include <sys/module.h> 60 #include <sys/bus.h> 61 #include <sys/ioccom.h> 62 #include <sys/conf.h> 63 #include <sys/fcntl.h> 64 #include <sys/filio.h> 65 #endif 66 #include <sys/conf.h> 67 #include <sys/tty.h> 68 #include <sys/file.h> 69 #include <sys/select.h> 70 #include <sys/proc.h> 71 #include <sys/vnode.h> 72 #include <sys/poll.h> 73 74 #include <dev/usb/usb.h> 75 #include <dev/usb/usbdi.h> 76 #include <dev/usb/usbdi_util.h> 77 78 #ifdef UGEN_DEBUG 79 #define DPRINTF(x) if (ugendebug) logprintf x 80 #define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x 81 int ugendebug = 0; 82 #else 83 #define DPRINTF(x) 84 #define DPRINTFN(n,x) 85 #endif 86 87 #define UGEN_CHUNK 128 /* chunk size for read */ 88 #define UGEN_IBSIZE 1020 /* buffer size */ 89 #define UGEN_BBSIZE 1024 90 91 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */ 92 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */ 93 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */ 94 95 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 96 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 97 98 struct ugen_endpoint { 99 struct ugen_softc *sc; 100 usb_endpoint_descriptor_t *edesc; 101 usbd_interface_handle iface; 102 int state; 103 #define UGEN_ASLP 0x02 /* waiting for data */ 104 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 105 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 106 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 107 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 108 usbd_pipe_handle pipeh; 109 struct clist q; 110 struct selinfo rsel; 111 u_char *ibuf; /* start of buffer (circular for isoc) */ 112 u_char *fill; /* location for input (isoc) */ 113 u_char *limit; /* end of circular buffer (isoc) */ 114 u_char *cur; /* current read location (isoc) */ 115 u_int32_t timeout; 116 #ifdef UGEN_BULK_RA_WB 117 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 118 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 119 u_int32_t ra_wb_used; /* how much is in buffer */ 120 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 121 usbd_xfer_handle ra_wb_xfer; 122 #endif 123 struct isoreq { 124 struct ugen_endpoint *sce; 125 usbd_xfer_handle xfer; 126 void *dmabuf; 127 u_int16_t sizes[UGEN_NISORFRMS]; 128 } isoreqs[UGEN_NISOREQS]; 129 }; 130 131 struct ugen_softc { 132 USBBASEDEVICE sc_dev; /* base device */ 133 usbd_device_handle sc_udev; 134 135 char sc_is_open[USB_MAX_ENDPOINTS]; 136 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 137 #define OUT 0 138 #define IN 1 139 140 int sc_refcnt; 141 char sc_buffer[UGEN_BBSIZE]; 142 u_char sc_dying; 143 }; 144 145 #if defined(__NetBSD__) 146 dev_type_open(ugenopen); 147 dev_type_close(ugenclose); 148 dev_type_read(ugenread); 149 dev_type_write(ugenwrite); 150 dev_type_ioctl(ugenioctl); 151 dev_type_poll(ugenpoll); 152 dev_type_kqfilter(ugenkqfilter); 153 154 const struct cdevsw ugen_cdevsw = { 155 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 156 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 157 }; 158 #elif defined(__OpenBSD__) 159 cdev_decl(ugen); 160 #elif defined(__FreeBSD__) 161 d_open_t ugenopen; 162 d_close_t ugenclose; 163 d_read_t ugenread; 164 d_write_t ugenwrite; 165 d_ioctl_t ugenioctl; 166 d_poll_t ugenpoll; 167 168 #define UGEN_CDEV_MAJOR 114 169 170 Static struct cdevsw ugen_cdevsw = { 171 /* open */ ugenopen, 172 /* close */ ugenclose, 173 /* read */ ugenread, 174 /* write */ ugenwrite, 175 /* ioctl */ ugenioctl, 176 /* poll */ ugenpoll, 177 /* mmap */ nommap, 178 /* strategy */ nostrategy, 179 /* name */ "ugen", 180 /* maj */ UGEN_CDEV_MAJOR, 181 /* dump */ nodump, 182 /* psize */ nopsize, 183 /* flags */ 0, 184 /* bmaj */ -1 185 }; 186 #endif 187 188 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 189 usbd_status status); 190 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 191 usbd_status status); 192 #ifdef UGEN_BULK_RA_WB 193 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 194 usbd_status status); 195 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 196 usbd_status status); 197 #endif 198 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 199 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 200 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 201 caddr_t, int, struct lwp *); 202 Static int ugen_set_config(struct ugen_softc *sc, int configno); 203 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 204 int index, int *lenp); 205 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 206 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 207 208 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 209 #define UGENENDPOINT(n) (minor(n) & 0xf) 210 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 211 212 USB_DECLARE_DRIVER(ugen); 213 214 USB_MATCH(ugen) 215 { 216 USB_MATCH_START(ugen, uaa); 217 218 if (match->cf_flags & 1) 219 return (UMATCH_HIGHEST); 220 else if (uaa->usegeneric) 221 return (UMATCH_GENERIC); 222 else 223 return (UMATCH_NONE); 224 } 225 226 USB_ATTACH(ugen) 227 { 228 USB_ATTACH_START(ugen, sc, uaa); 229 usbd_device_handle udev; 230 char *devinfop; 231 usbd_status err; 232 int conf; 233 234 devinfop = usbd_devinfo_alloc(uaa->device, 0); 235 USB_ATTACH_SETUP; 236 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 237 usbd_devinfo_free(devinfop); 238 239 sc->sc_udev = udev = uaa->device; 240 241 /* First set configuration index 0, the default one for ugen. */ 242 err = usbd_set_config_index(udev, 0, 0); 243 if (err) { 244 printf("%s: setting configuration index 0 failed\n", 245 USBDEVNAME(sc->sc_dev)); 246 sc->sc_dying = 1; 247 USB_ATTACH_ERROR_RETURN; 248 } 249 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 250 251 /* Set up all the local state for this configuration. */ 252 err = ugen_set_config(sc, conf); 253 if (err) { 254 printf("%s: setting configuration %d failed\n", 255 USBDEVNAME(sc->sc_dev), conf); 256 sc->sc_dying = 1; 257 USB_ATTACH_ERROR_RETURN; 258 } 259 260 #ifdef __FreeBSD__ 261 { 262 static int global_init_done = 0; 263 if (!global_init_done) { 264 cdevsw_add(&ugen_cdevsw); 265 global_init_done = 1; 266 } 267 } 268 #endif 269 270 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 271 USBDEV(sc->sc_dev)); 272 273 USB_ATTACH_SUCCESS_RETURN; 274 } 275 276 Static int 277 ugen_set_config(struct ugen_softc *sc, int configno) 278 { 279 usbd_device_handle dev = sc->sc_udev; 280 usbd_interface_handle iface; 281 usb_endpoint_descriptor_t *ed; 282 struct ugen_endpoint *sce; 283 u_int8_t niface, nendpt; 284 int ifaceno, endptno, endpt; 285 usbd_status err; 286 int dir; 287 288 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 289 USBDEVNAME(sc->sc_dev), configno, sc)); 290 291 /* 292 * We start at 1, not 0, because we don't care whether the 293 * control endpoint is open or not. It is always present. 294 */ 295 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 296 if (sc->sc_is_open[endptno]) { 297 DPRINTFN(1, 298 ("ugen_set_config: %s - endpoint %d is open\n", 299 USBDEVNAME(sc->sc_dev), endptno)); 300 return (USBD_IN_USE); 301 } 302 303 /* Avoid setting the current value. */ 304 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 305 err = usbd_set_config_no(dev, configno, 1); 306 if (err) 307 return (err); 308 } 309 310 err = usbd_interface_count(dev, &niface); 311 if (err) 312 return (err); 313 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 314 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 315 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 316 err = usbd_device2interface_handle(dev, ifaceno, &iface); 317 if (err) 318 return (err); 319 err = usbd_endpoint_count(iface, &nendpt); 320 if (err) 321 return (err); 322 for (endptno = 0; endptno < nendpt; endptno++) { 323 ed = usbd_interface2endpoint_descriptor(iface,endptno); 324 KASSERT(ed != NULL); 325 endpt = ed->bEndpointAddress; 326 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 327 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 328 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 329 "(%d,%d), sce=%p\n", 330 endptno, endpt, UE_GET_ADDR(endpt), 331 UE_GET_DIR(endpt), sce)); 332 sce->sc = sc; 333 sce->edesc = ed; 334 sce->iface = iface; 335 } 336 } 337 return (USBD_NORMAL_COMPLETION); 338 } 339 340 int 341 ugenopen(dev_t dev, int flag, int mode __unused, struct lwp *l __unused) 342 { 343 struct ugen_softc *sc; 344 int unit = UGENUNIT(dev); 345 int endpt = UGENENDPOINT(dev); 346 usb_endpoint_descriptor_t *edesc; 347 struct ugen_endpoint *sce; 348 int dir, isize; 349 usbd_status err; 350 usbd_xfer_handle xfer; 351 void *tbuf; 352 int i, j; 353 354 USB_GET_SC_OPEN(ugen, unit, sc); 355 356 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 357 flag, mode, unit, endpt)); 358 359 if (sc == NULL || sc->sc_dying) 360 return (ENXIO); 361 362 /* The control endpoint allows multiple opens. */ 363 if (endpt == USB_CONTROL_ENDPOINT) { 364 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 365 return (0); 366 } 367 368 if (sc->sc_is_open[endpt]) 369 return (EBUSY); 370 371 /* Make sure there are pipes for all directions. */ 372 for (dir = OUT; dir <= IN; dir++) { 373 if (flag & (dir == OUT ? FWRITE : FREAD)) { 374 sce = &sc->sc_endpoints[endpt][dir]; 375 if (sce == 0 || sce->edesc == 0) 376 return (ENXIO); 377 } 378 } 379 380 /* Actually open the pipes. */ 381 /* XXX Should back out properly if it fails. */ 382 for (dir = OUT; dir <= IN; dir++) { 383 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 384 continue; 385 sce = &sc->sc_endpoints[endpt][dir]; 386 sce->state = 0; 387 sce->timeout = USBD_NO_TIMEOUT; 388 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 389 sc, endpt, dir, sce)); 390 edesc = sce->edesc; 391 switch (edesc->bmAttributes & UE_XFERTYPE) { 392 case UE_INTERRUPT: 393 if (dir == OUT) { 394 err = usbd_open_pipe(sce->iface, 395 edesc->bEndpointAddress, 0, &sce->pipeh); 396 if (err) 397 return (EIO); 398 break; 399 } 400 isize = UGETW(edesc->wMaxPacketSize); 401 if (isize == 0) /* shouldn't happen */ 402 return (EINVAL); 403 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 404 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 405 endpt, isize)); 406 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 407 return (ENOMEM); 408 err = usbd_open_pipe_intr(sce->iface, 409 edesc->bEndpointAddress, 410 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 411 sce->ibuf, isize, ugenintr, 412 USBD_DEFAULT_INTERVAL); 413 if (err) { 414 free(sce->ibuf, M_USBDEV); 415 clfree(&sce->q); 416 return (EIO); 417 } 418 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 419 break; 420 case UE_BULK: 421 err = usbd_open_pipe(sce->iface, 422 edesc->bEndpointAddress, 0, &sce->pipeh); 423 if (err) 424 return (EIO); 425 #ifdef UGEN_BULK_RA_WB 426 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 427 /* 428 * Use request size for non-RA/WB transfers 429 * as the default. 430 */ 431 sce->ra_wb_reqsize = UGEN_BBSIZE; 432 #endif 433 break; 434 case UE_ISOCHRONOUS: 435 if (dir == OUT) 436 return (EINVAL); 437 isize = UGETW(edesc->wMaxPacketSize); 438 if (isize == 0) /* shouldn't happen */ 439 return (EINVAL); 440 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 441 M_USBDEV, M_WAITOK); 442 sce->cur = sce->fill = sce->ibuf; 443 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 444 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 445 endpt, isize)); 446 err = usbd_open_pipe(sce->iface, 447 edesc->bEndpointAddress, 0, &sce->pipeh); 448 if (err) { 449 free(sce->ibuf, M_USBDEV); 450 return (EIO); 451 } 452 for(i = 0; i < UGEN_NISOREQS; ++i) { 453 sce->isoreqs[i].sce = sce; 454 xfer = usbd_alloc_xfer(sc->sc_udev); 455 if (xfer == 0) 456 goto bad; 457 sce->isoreqs[i].xfer = xfer; 458 tbuf = usbd_alloc_buffer 459 (xfer, isize * UGEN_NISORFRMS); 460 if (tbuf == 0) { 461 i++; 462 goto bad; 463 } 464 sce->isoreqs[i].dmabuf = tbuf; 465 for(j = 0; j < UGEN_NISORFRMS; ++j) 466 sce->isoreqs[i].sizes[j] = isize; 467 usbd_setup_isoc_xfer 468 (xfer, sce->pipeh, &sce->isoreqs[i], 469 sce->isoreqs[i].sizes, 470 UGEN_NISORFRMS, USBD_NO_COPY, 471 ugen_isoc_rintr); 472 (void)usbd_transfer(xfer); 473 } 474 DPRINTFN(5, ("ugenopen: isoc open done\n")); 475 break; 476 bad: 477 while (--i >= 0) /* implicit buffer free */ 478 usbd_free_xfer(sce->isoreqs[i].xfer); 479 return (ENOMEM); 480 case UE_CONTROL: 481 sce->timeout = USBD_DEFAULT_TIMEOUT; 482 return (EINVAL); 483 } 484 } 485 sc->sc_is_open[endpt] = 1; 486 return (0); 487 } 488 489 int 490 ugenclose(dev_t dev, int flag, int mode __unused, struct lwp *l __unused) 491 { 492 int endpt = UGENENDPOINT(dev); 493 struct ugen_softc *sc; 494 struct ugen_endpoint *sce; 495 int dir; 496 int i; 497 498 USB_GET_SC(ugen, UGENUNIT(dev), sc); 499 500 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 501 flag, mode, UGENUNIT(dev), endpt)); 502 503 #ifdef DIAGNOSTIC 504 if (!sc->sc_is_open[endpt]) { 505 printf("ugenclose: not open\n"); 506 return (EINVAL); 507 } 508 #endif 509 510 if (endpt == USB_CONTROL_ENDPOINT) { 511 DPRINTFN(5, ("ugenclose: close control\n")); 512 sc->sc_is_open[endpt] = 0; 513 return (0); 514 } 515 516 for (dir = OUT; dir <= IN; dir++) { 517 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 518 continue; 519 sce = &sc->sc_endpoints[endpt][dir]; 520 if (sce == NULL || sce->pipeh == NULL) 521 continue; 522 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 523 endpt, dir, sce)); 524 525 usbd_abort_pipe(sce->pipeh); 526 usbd_close_pipe(sce->pipeh); 527 sce->pipeh = NULL; 528 529 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 530 case UE_INTERRUPT: 531 ndflush(&sce->q, sce->q.c_cc); 532 clfree(&sce->q); 533 break; 534 case UE_ISOCHRONOUS: 535 for (i = 0; i < UGEN_NISOREQS; ++i) 536 usbd_free_xfer(sce->isoreqs[i].xfer); 537 break; 538 #ifdef UGEN_BULK_RA_WB 539 case UE_BULK: 540 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 541 /* ibuf freed below */ 542 usbd_free_xfer(sce->ra_wb_xfer); 543 break; 544 #endif 545 default: 546 break; 547 } 548 549 if (sce->ibuf != NULL) { 550 free(sce->ibuf, M_USBDEV); 551 sce->ibuf = NULL; 552 clfree(&sce->q); 553 } 554 } 555 sc->sc_is_open[endpt] = 0; 556 557 return (0); 558 } 559 560 Static int 561 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 562 { 563 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 564 u_int32_t n, tn; 565 usbd_xfer_handle xfer; 566 usbd_status err; 567 int s; 568 int error = 0; 569 570 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 571 572 if (sc->sc_dying) 573 return (EIO); 574 575 if (endpt == USB_CONTROL_ENDPOINT) 576 return (ENODEV); 577 578 #ifdef DIAGNOSTIC 579 if (sce->edesc == NULL) { 580 printf("ugenread: no edesc\n"); 581 return (EIO); 582 } 583 if (sce->pipeh == NULL) { 584 printf("ugenread: no pipe\n"); 585 return (EIO); 586 } 587 #endif 588 589 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 590 case UE_INTERRUPT: 591 /* Block until activity occurred. */ 592 s = splusb(); 593 while (sce->q.c_cc == 0) { 594 if (flag & IO_NDELAY) { 595 splx(s); 596 return (EWOULDBLOCK); 597 } 598 sce->state |= UGEN_ASLP; 599 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 600 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 601 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 602 if (sc->sc_dying) 603 error = EIO; 604 if (error) { 605 sce->state &= ~UGEN_ASLP; 606 break; 607 } 608 } 609 splx(s); 610 611 /* Transfer as many chunks as possible. */ 612 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 613 n = min(sce->q.c_cc, uio->uio_resid); 614 if (n > sizeof(sc->sc_buffer)) 615 n = sizeof(sc->sc_buffer); 616 617 /* Remove a small chunk from the input queue. */ 618 q_to_b(&sce->q, sc->sc_buffer, n); 619 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 620 621 /* Copy the data to the user process. */ 622 error = uiomove(sc->sc_buffer, n, uio); 623 if (error) 624 break; 625 } 626 break; 627 case UE_BULK: 628 #ifdef UGEN_BULK_RA_WB 629 if (sce->state & UGEN_BULK_RA) { 630 DPRINTFN(5, ("ugenread: BULK_RA req: %d used: %d\n", 631 uio->uio_resid, sce->ra_wb_used)); 632 xfer = sce->ra_wb_xfer; 633 634 s = splusb(); 635 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 636 splx(s); 637 return (EWOULDBLOCK); 638 } 639 while (uio->uio_resid > 0 && !error) { 640 while (sce->ra_wb_used == 0) { 641 sce->state |= UGEN_ASLP; 642 DPRINTFN(5, 643 ("ugenread: sleep on %p\n", 644 sce)); 645 error = tsleep(sce, PZERO | PCATCH, 646 "ugenrb", 0); 647 DPRINTFN(5, 648 ("ugenread: woke, error=%d\n", 649 error)); 650 if (sc->sc_dying) 651 error = EIO; 652 if (error) { 653 sce->state &= ~UGEN_ASLP; 654 break; 655 } 656 } 657 658 /* Copy data to the process. */ 659 while (uio->uio_resid > 0 660 && sce->ra_wb_used > 0) { 661 n = min(uio->uio_resid, 662 sce->ra_wb_used); 663 n = min(n, sce->limit - sce->cur); 664 error = uiomove(sce->cur, n, uio); 665 if (error) 666 break; 667 sce->cur += n; 668 sce->ra_wb_used -= n; 669 if (sce->cur == sce->limit) 670 sce->cur = sce->ibuf; 671 } 672 673 /* 674 * If the transfers stopped because the 675 * buffer was full, restart them. 676 */ 677 if (sce->state & UGEN_RA_WB_STOP && 678 sce->ra_wb_used < sce->limit - sce->ibuf) { 679 n = (sce->limit - sce->ibuf) 680 - sce->ra_wb_used; 681 usbd_setup_xfer(xfer, 682 sce->pipeh, sce, NULL, 683 min(n, sce->ra_wb_xferlen), 684 USBD_NO_COPY, USBD_NO_TIMEOUT, 685 ugen_bulkra_intr); 686 sce->state &= ~UGEN_RA_WB_STOP; 687 err = usbd_transfer(xfer); 688 if (err != USBD_IN_PROGRESS) 689 /* 690 * The transfer has not been 691 * queued. Setting STOP 692 * will make us try 693 * again at the next read. 694 */ 695 sce->state |= UGEN_RA_WB_STOP; 696 } 697 } 698 splx(s); 699 break; 700 } 701 #endif 702 xfer = usbd_alloc_xfer(sc->sc_udev); 703 if (xfer == 0) 704 return (ENOMEM); 705 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 706 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 707 tn = n; 708 err = usbd_bulk_transfer( 709 xfer, sce->pipeh, 710 sce->state & UGEN_SHORT_OK ? 711 USBD_SHORT_XFER_OK : 0, 712 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 713 if (err) { 714 if (err == USBD_INTERRUPTED) 715 error = EINTR; 716 else if (err == USBD_TIMEOUT) 717 error = ETIMEDOUT; 718 else 719 error = EIO; 720 break; 721 } 722 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 723 error = uiomove(sc->sc_buffer, tn, uio); 724 if (error || tn < n) 725 break; 726 } 727 usbd_free_xfer(xfer); 728 break; 729 case UE_ISOCHRONOUS: 730 s = splusb(); 731 while (sce->cur == sce->fill) { 732 if (flag & IO_NDELAY) { 733 splx(s); 734 return (EWOULDBLOCK); 735 } 736 sce->state |= UGEN_ASLP; 737 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 738 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 739 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 740 if (sc->sc_dying) 741 error = EIO; 742 if (error) { 743 sce->state &= ~UGEN_ASLP; 744 break; 745 } 746 } 747 748 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 749 if(sce->fill > sce->cur) 750 n = min(sce->fill - sce->cur, uio->uio_resid); 751 else 752 n = min(sce->limit - sce->cur, uio->uio_resid); 753 754 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 755 756 /* Copy the data to the user process. */ 757 error = uiomove(sce->cur, n, uio); 758 if (error) 759 break; 760 sce->cur += n; 761 if(sce->cur >= sce->limit) 762 sce->cur = sce->ibuf; 763 } 764 splx(s); 765 break; 766 767 768 default: 769 return (ENXIO); 770 } 771 return (error); 772 } 773 774 int 775 ugenread(dev_t dev, struct uio *uio, int flag) 776 { 777 int endpt = UGENENDPOINT(dev); 778 struct ugen_softc *sc; 779 int error; 780 781 USB_GET_SC(ugen, UGENUNIT(dev), sc); 782 783 sc->sc_refcnt++; 784 error = ugen_do_read(sc, endpt, uio, flag); 785 if (--sc->sc_refcnt < 0) 786 usb_detach_wakeup(USBDEV(sc->sc_dev)); 787 return (error); 788 } 789 790 Static int 791 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 792 int flag __unused) 793 { 794 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 795 u_int32_t n; 796 int error = 0; 797 #ifdef UGEN_BULK_RA_WB 798 int s; 799 u_int32_t tn; 800 char *dbuf; 801 #endif 802 usbd_xfer_handle xfer; 803 usbd_status err; 804 805 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 806 807 if (sc->sc_dying) 808 return (EIO); 809 810 if (endpt == USB_CONTROL_ENDPOINT) 811 return (ENODEV); 812 813 #ifdef DIAGNOSTIC 814 if (sce->edesc == NULL) { 815 printf("ugenwrite: no edesc\n"); 816 return (EIO); 817 } 818 if (sce->pipeh == NULL) { 819 printf("ugenwrite: no pipe\n"); 820 return (EIO); 821 } 822 #endif 823 824 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 825 case UE_BULK: 826 #ifdef UGEN_BULK_RA_WB 827 if (sce->state & UGEN_BULK_WB) { 828 DPRINTFN(5, ("ugenwrite: BULK_WB req: %d used: %d\n", 829 uio->uio_resid, sce->ra_wb_used)); 830 xfer = sce->ra_wb_xfer; 831 832 s = splusb(); 833 if (sce->ra_wb_used == sce->limit - sce->ibuf && 834 flag & IO_NDELAY) { 835 splx(s); 836 return (EWOULDBLOCK); 837 } 838 while (uio->uio_resid > 0 && !error) { 839 while (sce->ra_wb_used == 840 sce->limit - sce->ibuf) { 841 sce->state |= UGEN_ASLP; 842 DPRINTFN(5, 843 ("ugenwrite: sleep on %p\n", 844 sce)); 845 error = tsleep(sce, PZERO | PCATCH, 846 "ugenwb", 0); 847 DPRINTFN(5, 848 ("ugenwrite: woke, error=%d\n", 849 error)); 850 if (sc->sc_dying) 851 error = EIO; 852 if (error) { 853 sce->state &= ~UGEN_ASLP; 854 break; 855 } 856 } 857 858 /* Copy data from the process. */ 859 while (uio->uio_resid > 0 && 860 sce->ra_wb_used < sce->limit - sce->ibuf) { 861 n = min(uio->uio_resid, 862 (sce->limit - sce->ibuf) 863 - sce->ra_wb_used); 864 n = min(n, sce->limit - sce->fill); 865 error = uiomove(sce->fill, n, uio); 866 if (error) 867 break; 868 sce->fill += n; 869 sce->ra_wb_used += n; 870 if (sce->fill == sce->limit) 871 sce->fill = sce->ibuf; 872 } 873 874 /* 875 * If the transfers stopped because the 876 * buffer was empty, restart them. 877 */ 878 if (sce->state & UGEN_RA_WB_STOP && 879 sce->ra_wb_used > 0) { 880 dbuf = (char *)usbd_get_buffer(xfer); 881 n = min(sce->ra_wb_used, 882 sce->ra_wb_xferlen); 883 tn = min(n, sce->limit - sce->cur); 884 memcpy(dbuf, sce->cur, tn); 885 dbuf += tn; 886 if (n - tn > 0) 887 memcpy(dbuf, sce->ibuf, 888 n - tn); 889 usbd_setup_xfer(xfer, 890 sce->pipeh, sce, NULL, n, 891 USBD_NO_COPY, USBD_NO_TIMEOUT, 892 ugen_bulkwb_intr); 893 sce->state &= ~UGEN_RA_WB_STOP; 894 err = usbd_transfer(xfer); 895 if (err != USBD_IN_PROGRESS) 896 /* 897 * The transfer has not been 898 * queued. Setting STOP 899 * will make us try again 900 * at the next read. 901 */ 902 sce->state |= UGEN_RA_WB_STOP; 903 } 904 } 905 splx(s); 906 break; 907 } 908 #endif 909 xfer = usbd_alloc_xfer(sc->sc_udev); 910 if (xfer == 0) 911 return (EIO); 912 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 913 error = uiomove(sc->sc_buffer, n, uio); 914 if (error) 915 break; 916 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 917 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 918 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 919 if (err) { 920 if (err == USBD_INTERRUPTED) 921 error = EINTR; 922 else if (err == USBD_TIMEOUT) 923 error = ETIMEDOUT; 924 else 925 error = EIO; 926 break; 927 } 928 } 929 usbd_free_xfer(xfer); 930 break; 931 case UE_INTERRUPT: 932 xfer = usbd_alloc_xfer(sc->sc_udev); 933 if (xfer == 0) 934 return (EIO); 935 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 936 uio->uio_resid)) != 0) { 937 error = uiomove(sc->sc_buffer, n, uio); 938 if (error) 939 break; 940 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 941 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 942 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 943 if (err) { 944 if (err == USBD_INTERRUPTED) 945 error = EINTR; 946 else if (err == USBD_TIMEOUT) 947 error = ETIMEDOUT; 948 else 949 error = EIO; 950 break; 951 } 952 } 953 usbd_free_xfer(xfer); 954 break; 955 default: 956 return (ENXIO); 957 } 958 return (error); 959 } 960 961 int 962 ugenwrite(dev_t dev, struct uio *uio, int flag) 963 { 964 int endpt = UGENENDPOINT(dev); 965 struct ugen_softc *sc; 966 int error; 967 968 USB_GET_SC(ugen, UGENUNIT(dev), sc); 969 970 sc->sc_refcnt++; 971 error = ugen_do_write(sc, endpt, uio, flag); 972 if (--sc->sc_refcnt < 0) 973 usb_detach_wakeup(USBDEV(sc->sc_dev)); 974 return (error); 975 } 976 977 #if defined(__NetBSD__) || defined(__OpenBSD__) 978 int 979 ugen_activate(device_ptr_t self, enum devact act) 980 { 981 struct ugen_softc *sc = (struct ugen_softc *)self; 982 983 switch (act) { 984 case DVACT_ACTIVATE: 985 return (EOPNOTSUPP); 986 987 case DVACT_DEACTIVATE: 988 sc->sc_dying = 1; 989 break; 990 } 991 return (0); 992 } 993 #endif 994 995 USB_DETACH(ugen) 996 { 997 USB_DETACH_START(ugen, sc); 998 struct ugen_endpoint *sce; 999 int i, dir; 1000 int s; 1001 #if defined(__NetBSD__) || defined(__OpenBSD__) 1002 int maj, mn; 1003 1004 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1005 #elif defined(__FreeBSD__) 1006 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1007 #endif 1008 1009 sc->sc_dying = 1; 1010 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1011 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1012 for (dir = OUT; dir <= IN; dir++) { 1013 sce = &sc->sc_endpoints[i][dir]; 1014 if (sce && sce->pipeh) 1015 usbd_abort_pipe(sce->pipeh); 1016 } 1017 } 1018 1019 s = splusb(); 1020 if (--sc->sc_refcnt >= 0) { 1021 /* Wake everyone */ 1022 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1023 wakeup(&sc->sc_endpoints[i][IN]); 1024 /* Wait for processes to go away. */ 1025 usb_detach_wait(USBDEV(sc->sc_dev)); 1026 } 1027 splx(s); 1028 1029 #if defined(__NetBSD__) || defined(__OpenBSD__) 1030 /* locate the major number */ 1031 #if defined(__NetBSD__) 1032 maj = cdevsw_lookup_major(&ugen_cdevsw); 1033 #elif defined(__OpenBSD__) 1034 for (maj = 0; maj < nchrdev; maj++) 1035 if (cdevsw[maj].d_open == ugenopen) 1036 break; 1037 #endif 1038 1039 /* Nuke the vnodes for any open instances (calls close). */ 1040 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1041 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1042 #elif defined(__FreeBSD__) 1043 /* XXX not implemented yet */ 1044 #endif 1045 1046 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1047 USBDEV(sc->sc_dev)); 1048 1049 return (0); 1050 } 1051 1052 Static void 1053 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1054 { 1055 struct ugen_endpoint *sce = addr; 1056 /*struct ugen_softc *sc = sce->sc;*/ 1057 u_int32_t count; 1058 u_char *ibuf; 1059 1060 if (status == USBD_CANCELLED) 1061 return; 1062 1063 if (status != USBD_NORMAL_COMPLETION) { 1064 DPRINTF(("ugenintr: status=%d\n", status)); 1065 if (status == USBD_STALLED) 1066 usbd_clear_endpoint_stall_async(sce->pipeh); 1067 return; 1068 } 1069 1070 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1071 ibuf = sce->ibuf; 1072 1073 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1074 xfer, status, count)); 1075 DPRINTFN(5, (" data = %02x %02x %02x\n", 1076 ibuf[0], ibuf[1], ibuf[2])); 1077 1078 (void)b_to_q(ibuf, count, &sce->q); 1079 1080 if (sce->state & UGEN_ASLP) { 1081 sce->state &= ~UGEN_ASLP; 1082 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1083 wakeup(sce); 1084 } 1085 selnotify(&sce->rsel, 0); 1086 } 1087 1088 Static void 1089 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1090 usbd_status status) 1091 { 1092 struct isoreq *req = addr; 1093 struct ugen_endpoint *sce = req->sce; 1094 u_int32_t count, n; 1095 int i, isize; 1096 1097 /* Return if we are aborting. */ 1098 if (status == USBD_CANCELLED) 1099 return; 1100 1101 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1102 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1103 (long)(req - sce->isoreqs), count)); 1104 1105 /* throw away oldest input if the buffer is full */ 1106 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1107 sce->cur += count; 1108 if(sce->cur >= sce->limit) 1109 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1110 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1111 count)); 1112 } 1113 1114 isize = UGETW(sce->edesc->wMaxPacketSize); 1115 for (i = 0; i < UGEN_NISORFRMS; i++) { 1116 u_int32_t actlen = req->sizes[i]; 1117 char const *tbuf = (char const *)req->dmabuf + isize * i; 1118 1119 /* copy data to buffer */ 1120 while (actlen > 0) { 1121 n = min(actlen, sce->limit - sce->fill); 1122 memcpy(sce->fill, tbuf, n); 1123 1124 tbuf += n; 1125 actlen -= n; 1126 sce->fill += n; 1127 if(sce->fill == sce->limit) 1128 sce->fill = sce->ibuf; 1129 } 1130 1131 /* setup size for next transfer */ 1132 req->sizes[i] = isize; 1133 } 1134 1135 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1136 USBD_NO_COPY, ugen_isoc_rintr); 1137 (void)usbd_transfer(xfer); 1138 1139 if (sce->state & UGEN_ASLP) { 1140 sce->state &= ~UGEN_ASLP; 1141 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1142 wakeup(sce); 1143 } 1144 selnotify(&sce->rsel, 0); 1145 } 1146 1147 #ifdef UGEN_BULK_RA_WB 1148 Static void 1149 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1150 usbd_status status) 1151 { 1152 struct ugen_endpoint *sce = addr; 1153 u_int32_t count, n; 1154 char const *tbuf; 1155 usbd_status err; 1156 1157 /* Return if we are aborting. */ 1158 if (status == USBD_CANCELLED) 1159 return; 1160 1161 if (status != USBD_NORMAL_COMPLETION) { 1162 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1163 sce->state |= UGEN_RA_WB_STOP; 1164 if (status == USBD_STALLED) 1165 usbd_clear_endpoint_stall_async(sce->pipeh); 1166 return; 1167 } 1168 1169 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1170 1171 /* Keep track of how much is in the buffer. */ 1172 sce->ra_wb_used += count; 1173 1174 /* Copy data to buffer. */ 1175 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1176 n = min(count, sce->limit - sce->fill); 1177 memcpy(sce->fill, tbuf, n); 1178 tbuf += n; 1179 count -= n; 1180 sce->fill += n; 1181 if (sce->fill == sce->limit) 1182 sce->fill = sce->ibuf; 1183 if (count > 0) { 1184 memcpy(sce->fill, tbuf, count); 1185 sce->fill += count; 1186 } 1187 1188 /* Set up the next request if necessary. */ 1189 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1190 if (n > 0) { 1191 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1192 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1193 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1194 err = usbd_transfer(xfer); 1195 if (err != USBD_IN_PROGRESS) { 1196 printf("usbd_bulkra_intr: error=%d\n", err); 1197 /* 1198 * The transfer has not been queued. Setting STOP 1199 * will make us try again at the next read. 1200 */ 1201 sce->state |= UGEN_RA_WB_STOP; 1202 } 1203 } 1204 else 1205 sce->state |= UGEN_RA_WB_STOP; 1206 1207 if (sce->state & UGEN_ASLP) { 1208 sce->state &= ~UGEN_ASLP; 1209 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1210 wakeup(sce); 1211 } 1212 selnotify(&sce->rsel, 0); 1213 } 1214 1215 Static void 1216 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1217 usbd_status status) 1218 { 1219 struct ugen_endpoint *sce = addr; 1220 u_int32_t count, n; 1221 char *tbuf; 1222 usbd_status err; 1223 1224 /* Return if we are aborting. */ 1225 if (status == USBD_CANCELLED) 1226 return; 1227 1228 if (status != USBD_NORMAL_COMPLETION) { 1229 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1230 sce->state |= UGEN_RA_WB_STOP; 1231 if (status == USBD_STALLED) 1232 usbd_clear_endpoint_stall_async(sce->pipeh); 1233 return; 1234 } 1235 1236 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1237 1238 /* Keep track of how much is in the buffer. */ 1239 sce->ra_wb_used -= count; 1240 1241 /* Update buffer pointers. */ 1242 sce->cur += count; 1243 if (sce->cur >= sce->limit) 1244 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1245 1246 /* Set up next request if necessary. */ 1247 if (sce->ra_wb_used > 0) { 1248 /* copy data from buffer */ 1249 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1250 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1251 n = min(count, sce->limit - sce->cur); 1252 memcpy(tbuf, sce->cur, n); 1253 tbuf += n; 1254 if (count - n > 0) 1255 memcpy(tbuf, sce->ibuf, count - n); 1256 1257 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1258 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1259 err = usbd_transfer(xfer); 1260 if (err != USBD_IN_PROGRESS) { 1261 printf("usbd_bulkwb_intr: error=%d\n", err); 1262 /* 1263 * The transfer has not been queued. Setting STOP 1264 * will make us try again at the next write. 1265 */ 1266 sce->state |= UGEN_RA_WB_STOP; 1267 } 1268 } 1269 else 1270 sce->state |= UGEN_RA_WB_STOP; 1271 1272 if (sce->state & UGEN_ASLP) { 1273 sce->state &= ~UGEN_ASLP; 1274 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1275 wakeup(sce); 1276 } 1277 selnotify(&sce->rsel, 0); 1278 } 1279 #endif 1280 1281 Static usbd_status 1282 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1283 { 1284 usbd_interface_handle iface; 1285 usb_endpoint_descriptor_t *ed; 1286 usbd_status err; 1287 struct ugen_endpoint *sce; 1288 u_int8_t niface, nendpt, endptno, endpt; 1289 int dir; 1290 1291 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1292 1293 err = usbd_interface_count(sc->sc_udev, &niface); 1294 if (err) 1295 return (err); 1296 if (ifaceidx < 0 || ifaceidx >= niface) 1297 return (USBD_INVAL); 1298 1299 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1300 if (err) 1301 return (err); 1302 err = usbd_endpoint_count(iface, &nendpt); 1303 if (err) 1304 return (err); 1305 /* XXX should only do this after setting new altno has succeeded */ 1306 for (endptno = 0; endptno < nendpt; endptno++) { 1307 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1308 endpt = ed->bEndpointAddress; 1309 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1310 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1311 sce->sc = 0; 1312 sce->edesc = 0; 1313 sce->iface = 0; 1314 } 1315 1316 /* change setting */ 1317 err = usbd_set_interface(iface, altno); 1318 if (err) 1319 return (err); 1320 1321 err = usbd_endpoint_count(iface, &nendpt); 1322 if (err) 1323 return (err); 1324 for (endptno = 0; endptno < nendpt; endptno++) { 1325 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1326 KASSERT(ed != NULL); 1327 endpt = ed->bEndpointAddress; 1328 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1329 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1330 sce->sc = sc; 1331 sce->edesc = ed; 1332 sce->iface = iface; 1333 } 1334 return (0); 1335 } 1336 1337 /* Retrieve a complete descriptor for a certain device and index. */ 1338 Static usb_config_descriptor_t * 1339 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1340 { 1341 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1342 int len; 1343 usbd_status err; 1344 1345 if (index == USB_CURRENT_CONFIG_INDEX) { 1346 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1347 len = UGETW(tdesc->wTotalLength); 1348 if (lenp) 1349 *lenp = len; 1350 cdesc = malloc(len, M_TEMP, M_WAITOK); 1351 memcpy(cdesc, tdesc, len); 1352 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1353 } else { 1354 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1355 if (err) 1356 return (0); 1357 len = UGETW(cdescr.wTotalLength); 1358 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1359 if (lenp) 1360 *lenp = len; 1361 cdesc = malloc(len, M_TEMP, M_WAITOK); 1362 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1363 if (err) { 1364 free(cdesc, M_TEMP); 1365 return (0); 1366 } 1367 } 1368 return (cdesc); 1369 } 1370 1371 Static int 1372 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1373 { 1374 usbd_interface_handle iface; 1375 usbd_status err; 1376 1377 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1378 if (err) 1379 return (-1); 1380 return (usbd_get_interface_altindex(iface)); 1381 } 1382 1383 Static int 1384 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1385 caddr_t addr, int flag, struct lwp *l) 1386 { 1387 struct ugen_endpoint *sce; 1388 usbd_status err; 1389 usbd_interface_handle iface; 1390 struct usb_config_desc *cd; 1391 usb_config_descriptor_t *cdesc; 1392 struct usb_interface_desc *id; 1393 usb_interface_descriptor_t *idesc; 1394 struct usb_endpoint_desc *ed; 1395 usb_endpoint_descriptor_t *edesc; 1396 struct usb_alt_interface *ai; 1397 struct usb_string_desc *si; 1398 u_int8_t conf, alt; 1399 1400 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1401 if (sc->sc_dying) 1402 return (EIO); 1403 1404 switch (cmd) { 1405 case FIONBIO: 1406 /* All handled in the upper FS layer. */ 1407 return (0); 1408 case USB_SET_SHORT_XFER: 1409 if (endpt == USB_CONTROL_ENDPOINT) 1410 return (EINVAL); 1411 /* This flag only affects read */ 1412 sce = &sc->sc_endpoints[endpt][IN]; 1413 if (sce == NULL || sce->pipeh == NULL) 1414 return (EINVAL); 1415 if (*(int *)addr) 1416 sce->state |= UGEN_SHORT_OK; 1417 else 1418 sce->state &= ~UGEN_SHORT_OK; 1419 return (0); 1420 case USB_SET_TIMEOUT: 1421 sce = &sc->sc_endpoints[endpt][IN]; 1422 if (sce == NULL 1423 /* XXX this shouldn't happen, but the distinction between 1424 input and output pipes isn't clear enough. 1425 || sce->pipeh == NULL */ 1426 ) 1427 return (EINVAL); 1428 sce->timeout = *(int *)addr; 1429 return (0); 1430 case USB_SET_BULK_RA: 1431 #ifdef UGEN_BULK_RA_WB 1432 if (endpt == USB_CONTROL_ENDPOINT) 1433 return (EINVAL); 1434 sce = &sc->sc_endpoints[endpt][IN]; 1435 if (sce == NULL || sce->pipeh == NULL) 1436 return (EINVAL); 1437 edesc = sce->edesc; 1438 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1439 return (EINVAL); 1440 1441 if (*(int *)addr) { 1442 /* Only turn RA on if it's currently off. */ 1443 if (sce->state & UGEN_BULK_RA) 1444 return (0); 1445 1446 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1447 /* shouldn't happen */ 1448 return (EINVAL); 1449 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1450 if (sce->ra_wb_xfer == NULL) 1451 return (ENOMEM); 1452 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1453 /* 1454 * Set up a dmabuf because we reuse the xfer with 1455 * the same (max) request length like isoc. 1456 */ 1457 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1458 sce->ra_wb_xferlen) == 0) { 1459 usbd_free_xfer(sce->ra_wb_xfer); 1460 return (ENOMEM); 1461 } 1462 sce->ibuf = malloc(sce->ra_wb_bufsize, 1463 M_USBDEV, M_WAITOK); 1464 sce->fill = sce->cur = sce->ibuf; 1465 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1466 sce->ra_wb_used = 0; 1467 sce->state |= UGEN_BULK_RA; 1468 sce->state &= ~UGEN_RA_WB_STOP; 1469 /* Now start reading. */ 1470 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1471 NULL, 1472 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1473 USBD_NO_COPY, USBD_NO_TIMEOUT, 1474 ugen_bulkra_intr); 1475 err = usbd_transfer(sce->ra_wb_xfer); 1476 if (err != USBD_IN_PROGRESS) { 1477 sce->state &= ~UGEN_BULK_RA; 1478 free(sce->ibuf, M_USBDEV); 1479 sce->ibuf = NULL; 1480 usbd_free_xfer(sce->ra_wb_xfer); 1481 return (EIO); 1482 } 1483 } else { 1484 /* Only turn RA off if it's currently on. */ 1485 if (!(sce->state & UGEN_BULK_RA)) 1486 return (0); 1487 1488 sce->state &= ~UGEN_BULK_RA; 1489 usbd_abort_pipe(sce->pipeh); 1490 usbd_free_xfer(sce->ra_wb_xfer); 1491 /* 1492 * XXX Discard whatever's in the buffer, but we 1493 * should keep it around and drain the buffer 1494 * instead. 1495 */ 1496 free(sce->ibuf, M_USBDEV); 1497 sce->ibuf = NULL; 1498 } 1499 return (0); 1500 #else 1501 return (EOPNOTSUPP); 1502 #endif 1503 case USB_SET_BULK_WB: 1504 #ifdef UGEN_BULK_RA_WB 1505 if (endpt == USB_CONTROL_ENDPOINT) 1506 return (EINVAL); 1507 sce = &sc->sc_endpoints[endpt][OUT]; 1508 if (sce == NULL || sce->pipeh == NULL) 1509 return (EINVAL); 1510 edesc = sce->edesc; 1511 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1512 return (EINVAL); 1513 1514 if (*(int *)addr) { 1515 /* Only turn WB on if it's currently off. */ 1516 if (sce->state & UGEN_BULK_WB) 1517 return (0); 1518 1519 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1520 /* shouldn't happen */ 1521 return (EINVAL); 1522 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1523 if (sce->ra_wb_xfer == NULL) 1524 return (ENOMEM); 1525 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1526 /* 1527 * Set up a dmabuf because we reuse the xfer with 1528 * the same (max) request length like isoc. 1529 */ 1530 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1531 sce->ra_wb_xferlen) == 0) { 1532 usbd_free_xfer(sce->ra_wb_xfer); 1533 return (ENOMEM); 1534 } 1535 sce->ibuf = malloc(sce->ra_wb_bufsize, 1536 M_USBDEV, M_WAITOK); 1537 sce->fill = sce->cur = sce->ibuf; 1538 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1539 sce->ra_wb_used = 0; 1540 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1541 } else { 1542 /* Only turn WB off if it's currently on. */ 1543 if (!(sce->state & UGEN_BULK_WB)) 1544 return (0); 1545 1546 sce->state &= ~UGEN_BULK_WB; 1547 /* 1548 * XXX Discard whatever's in the buffer, but we 1549 * should keep it around and keep writing to 1550 * drain the buffer instead. 1551 */ 1552 usbd_abort_pipe(sce->pipeh); 1553 usbd_free_xfer(sce->ra_wb_xfer); 1554 free(sce->ibuf, M_USBDEV); 1555 sce->ibuf = NULL; 1556 } 1557 return (0); 1558 #else 1559 return (EOPNOTSUPP); 1560 #endif 1561 case USB_SET_BULK_RA_OPT: 1562 case USB_SET_BULK_WB_OPT: 1563 #ifdef UGEN_BULK_RA_WB 1564 { 1565 struct usb_bulk_ra_wb_opt *opt; 1566 1567 if (endpt == USB_CONTROL_ENDPOINT) 1568 return (EINVAL); 1569 opt = (struct usb_bulk_ra_wb_opt *)addr; 1570 if (cmd == USB_SET_BULK_RA_OPT) 1571 sce = &sc->sc_endpoints[endpt][IN]; 1572 else 1573 sce = &sc->sc_endpoints[endpt][OUT]; 1574 if (sce == NULL || sce->pipeh == NULL) 1575 return (EINVAL); 1576 if (opt->ra_wb_buffer_size < 1 || 1577 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1578 opt->ra_wb_request_size < 1 || 1579 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1580 return (EINVAL); 1581 /* 1582 * XXX These changes do not take effect until the 1583 * next time RA/WB mode is enabled but they ought to 1584 * take effect immediately. 1585 */ 1586 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1587 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1588 return (0); 1589 } 1590 #else 1591 return (EOPNOTSUPP); 1592 #endif 1593 default: 1594 break; 1595 } 1596 1597 if (endpt != USB_CONTROL_ENDPOINT) 1598 return (EINVAL); 1599 1600 switch (cmd) { 1601 #ifdef UGEN_DEBUG 1602 case USB_SETDEBUG: 1603 ugendebug = *(int *)addr; 1604 break; 1605 #endif 1606 case USB_GET_CONFIG: 1607 err = usbd_get_config(sc->sc_udev, &conf); 1608 if (err) 1609 return (EIO); 1610 *(int *)addr = conf; 1611 break; 1612 case USB_SET_CONFIG: 1613 if (!(flag & FWRITE)) 1614 return (EPERM); 1615 err = ugen_set_config(sc, *(int *)addr); 1616 switch (err) { 1617 case USBD_NORMAL_COMPLETION: 1618 break; 1619 case USBD_IN_USE: 1620 return (EBUSY); 1621 default: 1622 return (EIO); 1623 } 1624 break; 1625 case USB_GET_ALTINTERFACE: 1626 ai = (struct usb_alt_interface *)addr; 1627 err = usbd_device2interface_handle(sc->sc_udev, 1628 ai->uai_interface_index, &iface); 1629 if (err) 1630 return (EINVAL); 1631 idesc = usbd_get_interface_descriptor(iface); 1632 if (idesc == NULL) 1633 return (EIO); 1634 ai->uai_alt_no = idesc->bAlternateSetting; 1635 break; 1636 case USB_SET_ALTINTERFACE: 1637 if (!(flag & FWRITE)) 1638 return (EPERM); 1639 ai = (struct usb_alt_interface *)addr; 1640 err = usbd_device2interface_handle(sc->sc_udev, 1641 ai->uai_interface_index, &iface); 1642 if (err) 1643 return (EINVAL); 1644 err = ugen_set_interface(sc, ai->uai_interface_index, 1645 ai->uai_alt_no); 1646 if (err) 1647 return (EINVAL); 1648 break; 1649 case USB_GET_NO_ALT: 1650 ai = (struct usb_alt_interface *)addr; 1651 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1652 if (cdesc == NULL) 1653 return (EINVAL); 1654 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1655 if (idesc == NULL) { 1656 free(cdesc, M_TEMP); 1657 return (EINVAL); 1658 } 1659 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1660 idesc->bInterfaceNumber); 1661 free(cdesc, M_TEMP); 1662 break; 1663 case USB_GET_DEVICE_DESC: 1664 *(usb_device_descriptor_t *)addr = 1665 *usbd_get_device_descriptor(sc->sc_udev); 1666 break; 1667 case USB_GET_CONFIG_DESC: 1668 cd = (struct usb_config_desc *)addr; 1669 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1670 if (cdesc == NULL) 1671 return (EINVAL); 1672 cd->ucd_desc = *cdesc; 1673 free(cdesc, M_TEMP); 1674 break; 1675 case USB_GET_INTERFACE_DESC: 1676 id = (struct usb_interface_desc *)addr; 1677 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1678 if (cdesc == NULL) 1679 return (EINVAL); 1680 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1681 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1682 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1683 else 1684 alt = id->uid_alt_index; 1685 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1686 if (idesc == NULL) { 1687 free(cdesc, M_TEMP); 1688 return (EINVAL); 1689 } 1690 id->uid_desc = *idesc; 1691 free(cdesc, M_TEMP); 1692 break; 1693 case USB_GET_ENDPOINT_DESC: 1694 ed = (struct usb_endpoint_desc *)addr; 1695 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1696 if (cdesc == NULL) 1697 return (EINVAL); 1698 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1699 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1700 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1701 else 1702 alt = ed->ued_alt_index; 1703 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1704 alt, ed->ued_endpoint_index); 1705 if (edesc == NULL) { 1706 free(cdesc, M_TEMP); 1707 return (EINVAL); 1708 } 1709 ed->ued_desc = *edesc; 1710 free(cdesc, M_TEMP); 1711 break; 1712 case USB_GET_FULL_DESC: 1713 { 1714 int len; 1715 struct iovec iov; 1716 struct uio uio; 1717 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1718 int error; 1719 1720 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1721 if (len > fd->ufd_size) 1722 len = fd->ufd_size; 1723 iov.iov_base = (caddr_t)fd->ufd_data; 1724 iov.iov_len = len; 1725 uio.uio_iov = &iov; 1726 uio.uio_iovcnt = 1; 1727 uio.uio_resid = len; 1728 uio.uio_offset = 0; 1729 uio.uio_rw = UIO_READ; 1730 uio.uio_vmspace = l->l_proc->p_vmspace; 1731 error = uiomove((void *)cdesc, len, &uio); 1732 free(cdesc, M_TEMP); 1733 return (error); 1734 } 1735 case USB_GET_STRING_DESC: { 1736 int len; 1737 si = (struct usb_string_desc *)addr; 1738 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1739 si->usd_language_id, &si->usd_desc, &len); 1740 if (err) 1741 return (EINVAL); 1742 break; 1743 } 1744 case USB_DO_REQUEST: 1745 { 1746 struct usb_ctl_request *ur = (void *)addr; 1747 int len = UGETW(ur->ucr_request.wLength); 1748 struct iovec iov; 1749 struct uio uio; 1750 void *ptr = 0; 1751 usbd_status xerr; 1752 int error = 0; 1753 1754 if (!(flag & FWRITE)) 1755 return (EPERM); 1756 /* Avoid requests that would damage the bus integrity. */ 1757 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1758 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1759 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1760 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1761 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1762 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1763 return (EINVAL); 1764 1765 if (len < 0 || len > 32767) 1766 return (EINVAL); 1767 if (len != 0) { 1768 iov.iov_base = (caddr_t)ur->ucr_data; 1769 iov.iov_len = len; 1770 uio.uio_iov = &iov; 1771 uio.uio_iovcnt = 1; 1772 uio.uio_resid = len; 1773 uio.uio_offset = 0; 1774 uio.uio_rw = 1775 ur->ucr_request.bmRequestType & UT_READ ? 1776 UIO_READ : UIO_WRITE; 1777 uio.uio_vmspace = l->l_proc->p_vmspace; 1778 ptr = malloc(len, M_TEMP, M_WAITOK); 1779 if (uio.uio_rw == UIO_WRITE) { 1780 error = uiomove(ptr, len, &uio); 1781 if (error) 1782 goto ret; 1783 } 1784 } 1785 sce = &sc->sc_endpoints[endpt][IN]; 1786 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1787 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1788 if (xerr) { 1789 error = EIO; 1790 goto ret; 1791 } 1792 if (len != 0) { 1793 if (uio.uio_rw == UIO_READ) { 1794 error = uiomove(ptr, len, &uio); 1795 if (error) 1796 goto ret; 1797 } 1798 } 1799 ret: 1800 if (ptr) 1801 free(ptr, M_TEMP); 1802 return (error); 1803 } 1804 case USB_GET_DEVICEINFO: 1805 usbd_fill_deviceinfo(sc->sc_udev, 1806 (struct usb_device_info *)addr, 1); 1807 break; 1808 default: 1809 return (EINVAL); 1810 } 1811 return (0); 1812 } 1813 1814 int 1815 ugenioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1816 { 1817 int endpt = UGENENDPOINT(dev); 1818 struct ugen_softc *sc; 1819 int error; 1820 1821 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1822 1823 sc->sc_refcnt++; 1824 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1825 if (--sc->sc_refcnt < 0) 1826 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1827 return (error); 1828 } 1829 1830 int 1831 ugenpoll(dev_t dev, int events, struct lwp *l) 1832 { 1833 struct ugen_softc *sc; 1834 struct ugen_endpoint *sce_in, *sce_out; 1835 int revents = 0; 1836 int s; 1837 1838 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1839 1840 if (sc->sc_dying) 1841 return (POLLHUP); 1842 1843 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1844 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1845 if (sce_in == NULL && sce_out == NULL) 1846 return (POLLERR); 1847 #ifdef DIAGNOSTIC 1848 if (!sce_in->edesc && !sce_out->edesc) { 1849 printf("ugenpoll: no edesc\n"); 1850 return (POLLERR); 1851 } 1852 /* It's possible to have only one pipe open. */ 1853 if (!sce_in->pipeh && !sce_out->pipeh) { 1854 printf("ugenpoll: no pipe\n"); 1855 return (POLLERR); 1856 } 1857 #endif 1858 s = splusb(); 1859 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1860 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1861 case UE_INTERRUPT: 1862 if (sce_in->q.c_cc > 0) 1863 revents |= events & (POLLIN | POLLRDNORM); 1864 else 1865 selrecord(l, &sce_in->rsel); 1866 break; 1867 case UE_ISOCHRONOUS: 1868 if (sce_in->cur != sce_in->fill) 1869 revents |= events & (POLLIN | POLLRDNORM); 1870 else 1871 selrecord(l, &sce_in->rsel); 1872 break; 1873 case UE_BULK: 1874 #ifdef UGEN_BULK_RA_WB 1875 if (sce_in->state & UGEN_BULK_RA) { 1876 if (sce_in->ra_wb_used > 0) 1877 revents |= events & 1878 (POLLIN | POLLRDNORM); 1879 else 1880 selrecord(l, &sce_in->rsel); 1881 break; 1882 } 1883 #endif 1884 /* 1885 * We have no easy way of determining if a read will 1886 * yield any data or a write will happen. 1887 * Pretend they will. 1888 */ 1889 revents |= events & (POLLIN | POLLRDNORM); 1890 break; 1891 default: 1892 break; 1893 } 1894 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1895 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1896 case UE_INTERRUPT: 1897 case UE_ISOCHRONOUS: 1898 /* XXX unimplemented */ 1899 break; 1900 case UE_BULK: 1901 #ifdef UGEN_BULK_RA_WB 1902 if (sce_out->state & UGEN_BULK_WB) { 1903 if (sce_out->ra_wb_used < 1904 sce_out->limit - sce_out->ibuf) 1905 revents |= events & 1906 (POLLOUT | POLLWRNORM); 1907 else 1908 selrecord(l, &sce_out->rsel); 1909 break; 1910 } 1911 #endif 1912 /* 1913 * We have no easy way of determining if a read will 1914 * yield any data or a write will happen. 1915 * Pretend they will. 1916 */ 1917 revents |= events & (POLLOUT | POLLWRNORM); 1918 break; 1919 default: 1920 break; 1921 } 1922 1923 1924 splx(s); 1925 return (revents); 1926 } 1927 1928 static void 1929 filt_ugenrdetach(struct knote *kn) 1930 { 1931 struct ugen_endpoint *sce = kn->kn_hook; 1932 int s; 1933 1934 s = splusb(); 1935 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1936 splx(s); 1937 } 1938 1939 static int 1940 filt_ugenread_intr(struct knote *kn, long hint __unused) 1941 { 1942 struct ugen_endpoint *sce = kn->kn_hook; 1943 1944 kn->kn_data = sce->q.c_cc; 1945 return (kn->kn_data > 0); 1946 } 1947 1948 static int 1949 filt_ugenread_isoc(struct knote *kn, long hint __unused) 1950 { 1951 struct ugen_endpoint *sce = kn->kn_hook; 1952 1953 if (sce->cur == sce->fill) 1954 return (0); 1955 1956 if (sce->cur < sce->fill) 1957 kn->kn_data = sce->fill - sce->cur; 1958 else 1959 kn->kn_data = (sce->limit - sce->cur) + 1960 (sce->fill - sce->ibuf); 1961 1962 return (1); 1963 } 1964 1965 #ifdef UGEN_BULK_RA_WB 1966 static int 1967 filt_ugenread_bulk(struct knote *kn, long hint) 1968 { 1969 struct ugen_endpoint *sce = kn->kn_hook; 1970 1971 if (!(sce->state & UGEN_BULK_RA)) 1972 /* 1973 * We have no easy way of determining if a read will 1974 * yield any data or a write will happen. 1975 * So, emulate "seltrue". 1976 */ 1977 return (filt_seltrue(kn, hint)); 1978 1979 if (sce->ra_wb_used == 0) 1980 return (0); 1981 1982 kn->kn_data = sce->ra_wb_used; 1983 1984 return (1); 1985 } 1986 1987 static int 1988 filt_ugenwrite_bulk(struct knote *kn, long hint) 1989 { 1990 struct ugen_endpoint *sce = kn->kn_hook; 1991 1992 if (!(sce->state & UGEN_BULK_WB)) 1993 /* 1994 * We have no easy way of determining if a read will 1995 * yield any data or a write will happen. 1996 * So, emulate "seltrue". 1997 */ 1998 return (filt_seltrue(kn, hint)); 1999 2000 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2001 return (0); 2002 2003 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2004 2005 return (1); 2006 } 2007 #endif 2008 2009 static const struct filterops ugenread_intr_filtops = 2010 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2011 2012 static const struct filterops ugenread_isoc_filtops = 2013 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2014 2015 #ifdef UGEN_BULK_RA_WB 2016 static const struct filterops ugenread_bulk_filtops = 2017 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2018 2019 static const struct filterops ugenwrite_bulk_filtops = 2020 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2021 #else 2022 static const struct filterops ugen_seltrue_filtops = 2023 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2024 #endif 2025 2026 int 2027 ugenkqfilter(dev_t dev, struct knote *kn) 2028 { 2029 struct ugen_softc *sc; 2030 struct ugen_endpoint *sce; 2031 struct klist *klist; 2032 int s; 2033 2034 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2035 2036 if (sc->sc_dying) 2037 return (1); 2038 2039 switch (kn->kn_filter) { 2040 case EVFILT_READ: 2041 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2042 if (sce == NULL) 2043 return (1); 2044 2045 klist = &sce->rsel.sel_klist; 2046 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2047 case UE_INTERRUPT: 2048 kn->kn_fop = &ugenread_intr_filtops; 2049 break; 2050 case UE_ISOCHRONOUS: 2051 kn->kn_fop = &ugenread_isoc_filtops; 2052 break; 2053 case UE_BULK: 2054 #ifdef UGEN_BULK_RA_WB 2055 kn->kn_fop = &ugenread_bulk_filtops; 2056 break; 2057 #else 2058 /* 2059 * We have no easy way of determining if a read will 2060 * yield any data or a write will happen. 2061 * So, emulate "seltrue". 2062 */ 2063 kn->kn_fop = &ugen_seltrue_filtops; 2064 #endif 2065 break; 2066 default: 2067 return (1); 2068 } 2069 break; 2070 2071 case EVFILT_WRITE: 2072 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2073 if (sce == NULL) 2074 return (1); 2075 2076 klist = &sce->rsel.sel_klist; 2077 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2078 case UE_INTERRUPT: 2079 case UE_ISOCHRONOUS: 2080 /* XXX poll doesn't support this */ 2081 return (1); 2082 2083 case UE_BULK: 2084 #ifdef UGEN_BULK_RA_WB 2085 kn->kn_fop = &ugenwrite_bulk_filtops; 2086 #else 2087 /* 2088 * We have no easy way of determining if a read will 2089 * yield any data or a write will happen. 2090 * So, emulate "seltrue". 2091 */ 2092 kn->kn_fop = &ugen_seltrue_filtops; 2093 #endif 2094 break; 2095 default: 2096 return (1); 2097 } 2098 break; 2099 2100 default: 2101 return (1); 2102 } 2103 2104 kn->kn_hook = sce; 2105 2106 s = splusb(); 2107 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2108 splx(s); 2109 2110 return (0); 2111 } 2112 2113 #if defined(__FreeBSD__) 2114 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2115 #endif 2116
Indexes created Fri Sep 26 20:09:58 GMT 2025